Cole Hamels, Philadelphia Phillies

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Since he made it to the big leagues in 2006, all Cole Hamels has done is win 83 games and put together one of the most dominant postseason runs in leading the Philadelphia Phillies to a World Series title in 2008.

Despite becoming one of the best lefties in the game, the 17th overall pick in 2002 is set to become a free agent after this season.

The two-time All-Star has shown tremendous improvement throughout his career but has often been overshadowed by his two Cy Young Award-winning teammates Roy Halladay and Cliff Lee.

However, with over $95 million tied up in its top two starters (not including both players’ vesting options) the Phillies may not have the financial flexibility to lock up Hamels to a long-term deal.

Zack Greinke, Milwaukee Brewers

Zack Greinke has been a tantalizing, but sometimes frustrating player since he was taken ahead of stars like Prince Fielder, Cole Hamels and Matt Cain.

The talented righty has overcome anxiety issues which threatened to derail his career and emerged as one of the better starters in the National League.

In 2009, Greinke strung together one of the best seasons of all time in capturing the AL Cy Young Award. At just 25 years old, the former Kansas City Royal won 16 games and struck out 242 batters while posting a minuscule 2.16 ERA.

Since he was traded to the Milwaukee Brewers, Greinke has continued to pitch well.

This season, he’s already 7-2 with a 2.96 ERA for the fourth-place Brewers.

Unless the Brewers can climb out of the cellar in the competitive NL Central, it might be wise to move Greinke for a good package of prospects.